Display device and electronic apparatus

ABSTRACT

A display device includes a plurality of pixels that is arrayed in a first direction and a second direction. Each pixel includes; a first sub-pixel, a second sub-pixel that is disposed to be adjacent to the first sub-pixel in the first direction, a third sub-pixel that is disposed to be adjacent to at least one of the first sub-pixel and the second sub-pixel in the second direction, and a light shielding portion that is disposed corresponding to the position on which the third sub-pixel is disposed, so as to limit a viewing angle of the third sub-pixel in the first direction.

CROSS REFERENCE TO RELATED APPLICATIONS

This application claims the benefit of Japanese Priority PatentApplication JP 2014-019533 filed Feb. 4, 2014, the entire contents ofwhich are incorporated herein by reference.

BACKGROUND

The present disclosure relates to a display device that includes aplurality of sub-pixels in one pixel, and an electronic apparatus usingsuch a display device.

A stripe array structure and a delta array structure are known as pixelarray structures in a display device in which an organicelectro-luminescence (EL) element or the like is used. As anotherstructure, a pixel array structure disclosed in Japanese UnexaminedPatent Application Publication No. 2011-249334 is known.

SUMMARY

A delta array structure is advantageous for a wide opening of a pixelfor achieving a long lifetime and a wide viewing angle. However, it isdifficult to avoid a jagged feel of a line pattern in a row directionand a column direction of the pixel. On the other hand, in a case wherea stripe array structure is adopted, the jagged feeling can be avoided.However, the total length for sub-pixels for color separation in onepixel becomes long, and the opening ratio decreases, and then, aluminance and the life time deteriorate.

Therefore, as disclosed in Japanese Unexamined Patent ApplicationPublication No. 2011-249334, a pixel array structure is proposed, inwhich a high resolution is realized and the opening ratio is ensured. Inthe pixel array structure disclosed in Japanese Unexamined PatentApplication Publication No. 2011-249334, a first sub-pixel and a secondsub-pixel are formed on one column in one pixel and a third sub-pixel isformed on two rows adjacent to the first sub-pixel and the secondsub-pixel, and thus, the opening ratio is improved. In this pixel arraystructure, an opening width of the third sub-pixel in the row directionis larger than the opening widths of the first sub-pixel and the secondsub-pixel.

However, in the pixel array structure disclosed in Japanese UnexaminedPatent Application Publication No. 2011-249334, since the opening widthof the third sub-pixel is different from that of the first and secondsub-pixels in the row direction, the viewing angle characteristicsdeteriorate. As an actual phenomenon, a variation in color variationoccurs at the time of full-color emission (white light emitting). Thisphenomenon appears more prominent as a pixel pitch becomes smaller, andthe color tone of an image viewed from front of a display panel and acolor tone of an image viewed at an angle are different from each other.Therefore, the viewing angle characteristics deteriorate compared to thestripe array structure and the delta array structure in which theopening widths of the sub-pixels of each color are the same. Thisphenomenon is prominently seen in a high-resolution panel of higher than2000 ppi, and it has become a major issue in recent years in which ahigh-resolution display is desired. Particularly, the resolution of adisplay panel used in a view finder or a head mounting display hasalready reached higher than a 2000 ppi range, and it has become clearthat a display panel for such application decreases the quality of thepanel.

It is desirable to provide a display device and an electronic apparatusin which both a wide opening and a wide viewing angle can be achieved.

According to the present disclosure, there is provided a display devicewhich includes a plurality of pixels that is arrayed in a firstdirection and a second direction. Each pixel includes a first sub-pixel,a second sub-pixel that is disposed to be adjacent to the firstsub-pixel in the first direction, a third sub-pixel that is disposed tobe adjacent to at least one of the first sub-pixel and the secondsub-pixel in the second direction, and a light shielding portion that isdisposed corresponding to the position on which the third sub-pixel isdisposed, so as to limit a viewing angle of the third sub-pixel in thefirst direction.

According to the present disclosure, there is provided an electronicapparatus which includes a display device on which a plurality of pixelsis arrayed in a first direction and a second direction. Each pixelincludes a first sub-pixel, a second sub-pixel that is disposed to beadjacent to the first sub-pixel in the first direction, a thirdsub-pixel that is disposed to be adjacent to at least one of the firstsub-pixel and the second sub-pixel in the second direction, and a lightshielding portion that is disposed corresponding to the position onwhich the third sub-pixel is disposed, so as to limit a viewing angle ofthe third sub-pixel in the first direction.

In the display device or the electronic apparatus according to thepresent disclosure, a viewing angle of the third sub-pixel in a firstdirection is limited by the light shielding portion.

According to a display device and an electronic apparatus in the presentdisclosure, since a viewing angle of a third sub-pixel in a firstdirection is limited by the light shielding portion, it is possible toachieve both the wide opening and the wide viewing angle.

The effect described here is not necessarily limited hereto, and may beany of the effects described in this disclosure.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a plan view illustrating an example of a display device in afirst embodiment of the present disclosure;

FIG. 2 is a plan view illustrating an example of an array structure of acolor filter portion of a pixel in the display device illustrated inFIG. 1;

FIG. 3 is a plan view illustrating an example of a configuration of acolor filter portion for one pixel in the display device illustrated inFIG. 1;

FIG. 4 is a plan view illustrating an example of an array structure of alight emitting element in the display device illustrated in FIG. 1;

FIG. 5 is a sectional view illustrating an example of a sectionalstructure of a pixel in the display device illustrated in FIG. 1;

FIG. 6 is a block diagram illustrating an example of a circuitconfiguration of the display device illustrated in FIG. 1;

FIG. 7 is a circuit diagram illustrating an example of a drive circuitof a pixel in the display device illustrated in FIG. 1;

FIG. 8 is a sectional view illustrating an example of a sectionalstructure of a light emitting element of a pixel in the display deviceillustrated in FIG. 1;

FIG. 9 is a sectional view illustrating another example of a sectionalstructure of a light emitting element of a pixel in the display deviceillustrated in FIG. 1;

FIG. 10 is a plan view illustrating a design example of a pixel in thedisplay device illustrated in FIG. 1;

FIG. 11 is a characteristic diagram illustrating viewing anglecharacteristics of a pixel in a lateral direction in the design exampleillustrated in FIG. 10;

FIG. 12 is a characteristic diagram illustrating viewing anglecharacteristics of a pixel in a vertical direction in the design exampleillustrated in FIG. 10;

FIG. 13 is a characteristic diagram illustrating viewing anglecharacteristics of a pixel in a vertical direction in a case where awidth of a light shielding portion is large in the design exampleillustrated in FIG. 10;

FIG. 14 is a characteristic diagram illustrating viewing anglecharacteristics of a pixel in a vertical direction in a case where awidth of a light shielding portion is small in the design exampleillustrated in FIG. 10;

FIG. 15 is a characteristic diagram illustrating viewing anglecharacteristics of a pixel in a vertical direction in a case where thelight shielding portion is not provided, as a comparison example to thedesign example illustrated in FIG. 10;

FIG. 16 is a plan view illustrating an example of an array structure ofa color filter portion of a pixel in a display device in a firstmodification example of the first embodiment;

FIG. 17 is a plan view illustrating an example of an array structure ofa color filter portion of a pixel in a display device in a secondmodification example;

FIG. 18 is a plan view illustrating an example of an array structure ofa color filter portion of a pixel in a display device in a thirdmodification example;

FIG. 19 is a plan view illustrating an example of a configuration of acolor filter portion for one pixel in the display device illustrated inFIG. 18;

FIG. 20 is a sectional view illustrating an example of a sectionalstructure of a pixel in a display device in a fourth modificationexample;

FIG. 21 is a sectional view illustrating an example of a sectionalstructure of a pixel in a display device in a fifth modificationexample;

FIG. 22 is a plan view illustrating an example of an array structure ofa color filter portion of a pixel in a display device in a secondembodiment;

FIG. 23 is a plan view illustrating an example of a configuration of acolor filter portion for one pixel in the display device illustrated inFIG. 22;

FIG. 24 is a plan view illustrating an example of an array structure ofa light emitting element in the display device illustrated in FIG. 22;

FIG. 25 is an explanatory diagram illustrating viewing anglecharacteristics of a third sub-pixel in a vertical direction in thedisplay device illustrated in FIG. 22;

FIG. 26 is a plan view illustrating an example of a display device in athird embodiment;

FIG. 27 is a plan view illustrating a first example of an arraystructure of a color filter portion of a pixel in the display device inFIG. 26;

FIG. 28 is a plan view illustrating an example of a configuration of acolor filter portion for one pixel in the first example in FIG. 27;

FIG. 29 is a plan view illustrating an example of an array structure ofonly a color filter in which the light shielding portion is not providedin the first example in FIG. 27;

FIG. 30 is a plan view illustrating a second example of an arraystructure of a color filter portion of a pixel in the display device inFIG. 26;

FIG. 31 is a plan view illustrating an example of a configuration of acolor filter portion for one pixel in the second example in FIG. 30;

FIG. 32 is a plan view illustrating an example of an array structure ofonly a color filter in which the light shielding portion is not providedin the second example in FIG. 30;

FIG. 33 is an external view illustrating a configuration example of ahead mount display as a first application example of a display device toan electronic apparatus;

FIG. 34 is a front side external view illustrating a configurationexample of a camera as a second application example of a display deviceto an electronic apparatus;

FIG. 35 is a rear side external view illustrating a configurationexample of the camera as the second application example of the displaydevice to an electronic apparatus;

FIG. 36 is a plan view illustrating another configuration example of thedisplay device; and

FIG. 37 is a plan view illustrating an example of an array structure ofa color filter portion of a pixel in the display device FIG. 36.

DETAILED DESCRIPTION OF EMBODIMENTS

Hereinafter, embodiments of the present disclosure will be described indetails with reference to the drawings. The description will be made infollowing order.

-   1. First embodiment (an example in which a light shielding portion    is disposed in a center portion in one pixel)-   1.1 Configuration (FIG. 1 to FIG. 9)-   1.2 Specific design example (FIG. 10 to FIG. 14)-   1.3 Effects-   1.4 Modification examples-   1.4.1 First modification example (FIG. 16)-   1.4.2 Second modification example (FIG. 17)-   1.4.3 Third modification example (FIG. 18 and FIG. 19)-   1.4.4 Fourth modification example (FIG. 20)-   1.4.5 Fifth modification example (FIG. 21)-   2. Second embodiment (an example in which a light shielding portion    is disposed in a position other than a center portion in one pixel)    (FIG. 22 to FIG. 25)-   2.1 Configuration-   2.2 Acts and effects-   3. Third embodiment (an example of a 4-color type display device)    (FIG. 26 to FIG. 32)-   3.1 First example of an array structure of a pixel-   3.2 Second example of an array structure of a pixel-   4. Application example of a display device to an electric apparatus    (FIG. 33 to FIG. 35)-   4.1 First application example (FIG. 33)-   4.2 Second application example (FIG. 34 and FIG. 35)-   5. Other embodiments (FIG. 36 and FIG. 37)    1. First Embodiment    1.1 Configuration    Overall Configuration of a Display Device 1

FIG. 1 illustrates an example of a planar configuration of a displaydevice 1 in the first embodiment of the present disclosure. The displaydevice 1 is used in a television or the like, and has a configuration inwhich a plurality of pixels 2 is disposed in a matrix shape in a firstdirection and a second direction in a display area 110.

Each of the pixels 2 includes a first sub-pixel 2R, a second sub-pixel2G, and a third sub-pixel 2B. The first sub-pixel 2R and the secondsub-pixel 2G are disposed to be adjacent to each other in the firstdirection. The third sub-pixel 2B is disposed to be adjacent to both thefirst sub-pixel 2R and the second sub-pixel 2G in the second direction.

In the present embodiment, an array structure of the pixel 2 will bedescribed with the first direction as a vertical direction (Y direction)in the display surface and the second direction as a lateral direction(X direction) in the display plane. The display plane means a plane (XYplane) parallel to a sheet surface in FIG. 1. In addition, for example,in FIG. 1, the description will be made with a direction perpendicularto the sheet surface as the Z direction, that is, a thickness directionof pixel 2 as the Z direction.

The arraying of the sub-pixels is not limited to the illustratedexample, but, for example, the first sub-pixel 2R and the secondsub-pixel 2G may be disposed in reverse. That is, the first sub-pixel 2Rmay be disposed to be adjacent to the lower side of the second sub-pixel2G.

Array Structure of the Pixel 2

Each pixel 2 includes a light emitting element that emits apredetermined color light and a color filter 23 that transmits apredetermined color light. FIG. 2 illustrates an example of an arraystructure of a color filter portion of the pixel 2 in the display device1. FIG. 3 illustrates an example of a configuration of the color filterportion for one pixel. FIG. 4 illustrates an example of the arraystructure of the light emitting element of the pixel 2. FIG. 5illustrates an example of the sectional structure of the pixel 2.

The first sub-pixel 2R includes a first light emitting element 10R (FIG.4 and FIG. 5) that emits a first color light LR and a first color filter23R (FIG. 2, FIG. 3, and FIG. 5) that transmits the first color light LRfrom the first light emitting element 10R. The second sub-pixel 2Gincludes a second light emitting element 10G (FIG. 4 and FIG. 5) thatemits a second color light LG and a second color filter 23G (FIG. 2,FIG. 3, and FIG. 5) that transmits the second color light LG from thesecond light emitting element 10G. The third sub-pixel 2B includes athird light emitting element 10B (FIG. 4 and FIG. 5) that emits a thirdcolor light LB which has a shorter wavelength than the first color lightLR and the second color light LG and a third color filter 23B (FIG. 2,FIG. 3, and FIG. 5) that transmits the third color light LB from thethird light emitting element 10B.

The first light emitting element 10R emits, for example, a red colorlight as the first color light LR. The second light emitting element 10Gemits, for example, a green color light as the second color light LG.The third light emitting element 10B emits, for example, a blue colorlight as the third color light LB. Each of the first light emittingelement 10R, the second light emitting element 10G, and the third lightemitting element 10B can be formed of an inorganic EL element, asemiconductor laser, or a light emitting diode (LED) in addition to anorganic EL element described below.

In each pixel 2, a light shielding portion 24 is provided as a blackmatrix. The light shielding portion 24 is disposed corresponding to theposition on which the third sub-pixel 2B is disposed, so as to limit theviewing angle of the third sub-pixel 2B in the first direction (Ydirection). The light shielding portion 24, as illustrated in FIG. 2 andFIG. 3, is made from a first light shielding part 24-1 and a secondlight shielding part 24-2. The first light shielding part 24-1 isprovided on a boundary portion of the adjacent pixels in the firstdirection. The second light shielding part 24-2 is provided on thecenter portion in the third sub-pixel 2B in one pixel. In this way, inthe one pixel, a first pixel area 2B-1 and a second pixel area 2B-2 areformed in the third sub-pixel 2B with the second light shielding part24-2 as the boundary.

It is preferable that the planar shape of the first light emittingelement 10R, the second light emitting element 10G, and the third lightemitting element 10B be a shape corresponding to the position on whichthe color filter 23 and the light shielding portion 24 are disposed asillustrated in FIG. 4. It is preferable that, in one pixel, the thirdlight emitting element 10B be divided at the portion corresponding tothe position on which the second light shielding part 24-2 is provided.A width of the third light emitting element 10B and a width of the lightshielding portion 24 in the second direction may be different from eachother. The first light emitting element 10R, the second light emittingelement 10G, and the third light emitting element 10B (light emittingsurface) may include a light emitting layer 16C and a lower electrode 14(reflection surface).

The light shielding portion 24 is formed of a black resin film mixedwith a black coloring agent and of which the optical density is one orhigher, or a thin film filter using interference of the thin film. It ispreferable to use the black resin film since it can form the lightshielding portion 24 inexpensively and easily. The thin film filter isformed by laminating a thin film made from metal, metal nitride, ormetal oxide in one or more layers, and attenuates the light using theinterference of the thin film. As the thin film filter, specifically, afilm in which chromium and chromium oxide (III) (Cr₂O₃) are alternatelylaminated can be included.

The color filter 23 is formed of, for example, resin mixed with pigment.By selecting the pigment, the light transmittance can be adjusted suchthat the light transmittance in the wavelength band of the targetedcolor is high and the light transmittance in the other wavelength bandis low.

As illustrated in FIG. 5, the light emitting elements 10R, 10G, and 10Bare provided on a first substrate 11. The light shielding portion 24 andthe color filter 23 are provided on a second substrate 21. The firstsubstrate 11 and the second substrate 21 are formed of glass, a silicon(Si) wafer, resin, or the like. The first substrate 11 and the secondsubstrate 21 are disposed opposite each other with the light emittingelements 10R, 10G, 10B, and the light shielding portion 24 and the colorfilter 23 to the inside, and an intermediate layer 30 made from a resinlayer 32 and a protection film 31 is provided between the twosubstrates.

As illustrated in FIG. 5, with regard to the first sub-pixel 2R and thethird sub-pixel 2B, a color separation is mutually performed in thesecond direction with a color boundary 25 of the first color filter 23Rand the third color filter 23B as a boundary. Similarly, with regard tothe second sub-pixel 2G and the third sub-pixel 2B, a color separationis mutually performed in the second direction with the color boundary 25of the second color filter 23G and the third color filter 23B as aboundary. Similarly, with regard to the first sub-pixel 2R and thesecond sub-pixel 2G, a color separation is mutually performed in thefirst direction with the color boundary 25 of the first color filter 23Rand the second color filter 23G as a boundary.

In this way, in the first sub-pixel 2R and the second sub-pixel 2G, thecolor separation is performed in both the first direction and the seconddirection by the color filter 23. That is, by the color filter 23, thecolor separation is performed between the pixels and between thesub-pixels. For this reason, with regard to the first sub-pixel 2R andthe second sub-pixel 2G, the viewing angle is limited by the colorfilter 23 in both the first direction and the second direction.

On the other hand, the third sub-pixel 2B has a configuration in whichthe color separation is performed by the color filter 23 in the seconddirection, but the color separation is not performed in the firstdirection. That is, with regard to the third sub-pixel 2B, the viewingangle is limited by the color filter 23 the second direction, but theviewing angle is not limited in the first direction. With regard to thethird sub-pixel 2B, the viewing angle in the first direction is limitedby the light shielding portion 24. In this way, the viewing anglecharacteristics in the direction where the color separation is notperformed are improved.

In FIG. 2, L_(BM-H) indicates a width of the light shielding portion 24in the lateral direction, and L_(BM-V) indicates a width of the lightshielding portion 24 in the vertical direction. L_(subpix1-H) indicatesan opening width of the first sub-pixel 2R in the lateral direction andL_(subpix1-V) indicates an opening width of the first sub-pixel 2R inthe vertical direction. L_(subpix2-H) indicates an opening width of thesecond sub-pixel 2G in the lateral direction and L_(subpix2-V) indicatesan opening width of the second sub-pixel 2G in the vertical direction.

In addition, L_(subpix3-H) indicates an opening width of the thirdsub-pixel 2B in the lateral direction and L_(subpix3-V) indicates anopening width of the third sub-pixel 2B in the vertical direction. Here,the opening width of the third sub-pixel 2B indicates each of theopening widths of the first pixel area 2B-1 and the second pixel area2B-2 of the third sub-pixel 2B. In the present embodiment, since thelight shielding portion 24 is provided on the center portion in thethird sub-pixel 2B in the first direction and on the boundary portion ofone pixel, sizes of opening widths L_(subpix3-V) of each of the firstpixel area 2B-1 and the second pixel area 2B-2 in the vertical directionare the same.

In the second direction, it is preferable that the width of the lightshielding portion 24 be less than the opening width of the thirdsub-pixel 2B. For example, it is preferable that the light shieldingportion 24 have a basic shape of rectangles with the directionseparating the color of the third sub-pixel 2B (the second direction) asthe major axis, and as illustrated in Formula 1, it is preferable thatthe length of the major axis be less than the opening width of the thirdsub-pixel 2B.L_(BM-H)<L_(subpix3-H)  (Formula 1)

In addition, as illustrated Formula 2 below, it is preferable that theopening width of the first sub-pixel 2R and opening width of the secondsub-pixel 2G be larger than the opening width of the third sub-pixel 2Bin the direction where color separation is performed.L_(subpix3-H)<L_(subpix1-H)L_(subpix3-H)<L_(subpix2-H)  (Formula 2)

Because the extraction of the light decreases, it is preferable that thelight shielding portion 24 not be disposed on the boundary portion (thecolor boundary 25) of each of the color filters 23R, 23G, and 23B. Asdescribed above, it is preferable that, in one pixel, the third lightemitting element 10B be divided at the portion corresponding to theposition on which the second light shielding part 24-2 is provided (FIG.4). The reason for dividing the third light emitting element 10B in onepixel is to avoid the phenomenon that the light emitted from the thirdlight emitting element 10B is reflected at the second light shieldingpart 24-2, interferes in the cell of the display panel, and then,generates an unexpected peak.

Configuration of a Drive Circuit of the Pixel 2 and the Light EmittingDiode

FIG. 6 illustrates an example of a circuit configuration of the displaydevice 1. FIG. 7 illustrates an example of a drive circuit of the pixel2 in the display device 1. The display device 1 is a device used as anorganic EL television apparatus which includes organic elements as thelight emitting element 10R, 10G, and 10B, and for example, includes asignal line drive circuit 120 and a scanning line drive circuit 130 inthe vicinity of the display area 110, which are drivers for the imagedisplaying.

In the display area 110, a pixel drive circuit 140 is provided. FIG. 7illustrates an example of the pixel drive circuit 140. The pixel drivecircuit 140 is an active-type drive circuit formed on a lower layer ofthe lower electrode 14 described below. That is, the pixel drive circuit140 includes a drive transistor Tr1 and a write transistor Tr2, acapacitor (holding capacitance) Cs between the transistors Tr1 and Tr2,and the light emitting element 10R (or 10G or 10B) that is connected tothe drive transistor Tr1 in series between a first power supply line(Vcc) and a second power supply line (GND). The drive transistor Tr1 andthe write transistor Tr2 are formed of general thin film transistors,and a configuration thereof is not particularly limited, that is, maybe, for example, an inverted staggered structure (so-called abottom-gate type) or may be a staggered structure (a top-gate type).

In the pixel drive circuit 140, a plurality of signal lines 120A isdisposed in a column direction and a plurality of scanning lines 130A isdisposed in a row direction. An intersection of each signal line 120Aand each scanning line 130A corresponds to any one (sub-pixel) of thelight emitting element 10R, 10G, and 10B. Each signal line 120A isconnected to the signal line drive circuit 120, and an image signal issupplied to a source electrode of the write transistor Tr2 from thesignal line drive circuit 120 via the signal line 120A. Each scanningline 130A is connected to the scanning line drive circuit 130, and ascanning signal is sequentially supplied to a gate of the writetransistor Tr2 from the scanning line drive circuit 130 via the scanningline 130A.

FIG. 8 illustrates a sectional configuration of the light emittingelements 10R, 10G, and 10B. The light emitting elements 10R, 10G, and10B are light emitting elements in which an organic layer 16 thatincludes the drive transistor Tr1 of the pixel drive circuit 140, aflattening insulation film 12, the lower electrode 14 as an anode, aninter-electrode insulation film 15, and the light emitting layer 16Cdescribed below; and an upper electrode 17 as a cathode; arerespectively deposited in the above order from the first substrate 11side. The drive transistor Tr1 is electrically connected to the lowerelectrode 14 via the connection hole 12A provided on the flatteninginsulation film 12.

The light emitting element 10R, 10G, and 10B are covered by a protectionfilm 31, and then are sealed by the second substrate 21 bonded over thewhole surface of the protection film 31 with the resin layer 32therebetween. The protection film 31 is formed of silicon nitride(SiNx), silicon oxide, metal oxide, or the like. The resin layer 32 isformed of, for example, thermosetting resin or ultraviolet curableresin. The above-described intermediate layer 30 is formed of theprotection film 31 and the resin layer 32.

The flattening insulation film 12 flattens the surface of the firstsubstrate 11 on which the pixel drive circuit 140 is formed, and it ispreferable that the flattening insulation film 12 is formed of amaterial having a high pattern accuracy because a fine connection hole12A is provided thereon. As the forming material for the flatteninginsulation film 12, for example, an organic materials such as polyamide,or an inorganic materials such as silicon oxide (SiO₂) can be included.

The lower electrode 14 also functions as a reflection layer, and it isdesirable that the reflection rate be as high as possible for enhancingthe efficiency of the light emission. Particularly, in a case where thelower electrode 14 is used as an anode, it is desirable that the lowerelectrode 14 be formed of a material having an improved hole injectionproperty. A single or an alloy of the metal element such as chromium(Cr), gold (Au), platinum (Pt), nickel (Ni), copper (Cu), tungsten (W),or silver (Ag) having a thickness in a deposition direction(hereinafter, simply referred to as thickness) equal to or greater than100 nm and equal to or less than 1000 nm can be included as examples ofthe lower electrode 14. A transparent conduction film such as indium tinoxide (ITO) may be provided on the surface of the lower electrode 14. Amaterial having a high reflection rate, but having a problem of a holeinjection barrier due to the existence of oxide film on the surface or alow work function such as aluminum (Al) alloy can be used as the lowerelectrode 14 by providing an appropriate hole injection layer.

The inter-electrode insulation film 15 is for ensuring the insulationbetween the lower electrode 14 and the upper electrode 17 and making thelight emitting area as a desired shape, and for example, is formed ofphotosensitive resin. The inter-electrode insulation film 15 is providedonly around the lower electrode 14, and the area of the lower electrode14 exposed from the inter-electrode insulation film 15 is the lightemitting area. The organic layer 16 and the upper electrode 17 are alsoprovided on the inter-electrode insulation film 15, but the lightemitting occurs only from the light emitting area.

The organic layer 16 has a configuration in which a hole injection layer16A, a hole transport layer 16B, the light emitting layer 16C, anelectron transport layer 16D, and an the electron injection layer 16Eare deposited in order from the lower electrode 14. Among the above, thelayer other than the light emitting layer 16C may be provided ifnecessary. The organic layer 16 may have a different configurationaccording to the respective emitting colors of the light emittingelement 10R, 10G, and 10B. The hole injection layer 16A is a bufferlayer for enhancing hole injection efficiency and preventing leakage.The hole transport layer 16B is a layer for enhancing hole transferefficiency to the light emitting layer 16C. The light emitting layer 16Cis a layer that emits the light when the electric potential is appliedand a recombination between the electrons and holes occurs. The electrontransport layer 16D is a layer for enhancing hole transfer efficiency tothe light emitting layer 16C. The electron injection layer 16E is alayer for enhancing electron injection efficiency.

The thickness of the upper electrode 17 is approximately 10 nm, and isformed of an alloy of aluminum (Al), magnesium (Mg), calcium (Ca), orsodium (Na). Among the above, since the electric conductivity is highand the absorption is small at the thin film state, the alloy (alloy ofMg—Ag) of the magnesium and silver is preferable. The rate Mg:Ag of thealloy of Mg—Ag is not particularly limited, but it is desirable to be ina range of approximately 20:1 to 1:1 on a film thickness basis. Inaddition, the material of the upper electrode 17 may be an alloy (alloyof Al—Li) of aluminum (Al) and lithium (Li).

The upper electrode 17 has a function of a semi-permeable reflectionlayer as well. That is, the light emitting elements 10R, 10G, and 10Binclude a resonator structure MC1, and the light generated at the lightemitting layer 16C is resonated by the resonator structure MC1 betweenthe lower electrode 14 and the upper electrode 17. The resonatorstructure MC1 resonates the light generated at the light emitting layer16C and extracts from a semi-permeable reflection surface P2 with theinterface between the lower electrode 14 and the organic layer 16 as areflection surface P1, the interface between an intermediate layer 18and the electron injection layer 16E as the semi-permeable reflectionsurface P2, and the organic layer 16 as a resonating portion. In thisway, if the resonator structure MC1 is included, the light generated atthe light emitting layer 16C is multiply interfered, a half value widthof a spectrum of light extracted from the semi-permeable reflectionsurface P2 side decreases, and then, the peak intensity can beincreased. That is, the light emission intensity in front directionincreases, and thus, color purity of the light emission can be improved.

Between the reflection surface P1 and the semi-permeable reflectionsurface P2, there exists a position (a resonance surface) on which theextracted light emission intensity becomes maximum. It is preferablethat an optical distance L1 between the reflection surface P1 and thesemi-permeable reflection surface P2 satisfy a predetermined conditionso as to enhance the extraction efficiency.

The light emitting elements 10R, 10G, and 10B may be elements in which,as illustrated in FIG. 9, the semi-permeable reflection surface P2 isnot included and the light generated at the light emitting layer 16C isreflected at the reflection surface P1, and is interfered with betweenthe reflected light and the light generated at the light emitting layer16C.

1.2 Specific Design Example

In the display device 1 in the present embodiment, by changing the size(width) in the lateral direction of the light shielding portion 24, theviewing angle characteristics in the direction in which the colorseparation is not performed can be adjusted. For example, by decreasingthe width of the light shielding portion 24, the viewing anglecharacteristics in the vertical direction of the third sub-pixel 2B canbecome wide-angle, and it is possible to combine the viewing anglecharacteristics of the first sub-pixel 2R and the second sub-pixel 2G.It is possible to adjust the viewing angle characteristics in thelateral direction such that the widths of the first color filter 23R ofthe first sub-pixel 2R and the second color filter 23G of the secondsub-pixel 2G, and the width of the third color filter 23B of the thirdsub-pixel 2B become different from each other.

FIG. 10 illustrates a design example of the pixel 2 in the presentembodiment. The dimension of each portion is as follows.

-   pitch of one pixel: 9.9 μm-   L_(BM-H): 3.0 μm-   L_(BM-V): 0.8 μm-   L_(subpix1-H): 6.1 μm-   L_(subpix2-H): 6.1 μm-   L_(subpix3-H): 3.8 μm-   L_(subpix1-V) 4.95 μm-   L_(subpix2-V): 4.95 μm-   L_(subpix3-V): 4.15 μm

For example, in a narrow pitch pixel in which a relationship between agap D_(G) (FIG. 5) between the light emitting elements 10R, 10G, and 10Band the color filter 23, and the opening width of the sub-pixel is 1:1,it is preferable that the opening width L_(subpix1-H) of the firstsub-pixel 2R in the lateral direction and the opening widthL_(subpix2-H) of the second sub-pixel 2G in the lateral directionrespectively be one to three times the opening width L_(subpix3-H) ofthird sub-pixel 2B in the lateral direction as described below.1<L_(subpix1-H)<L_(subpix3-H)<31<L_(subpix2-H)<L_(subpix3-H)<3

The third sub-pixel 2B that emits the third color light LB of which thewavelength is short has a high light extraction efficiency in a lowangle side (less than 20 degree) due to the interference in the cell ofdisplay panel compared to the first sub-pixel 2R and the secondsub-pixel 2G that emit the light of which the wavelength is longer thanthat of the third color light LB, and thus, the viewing anglecharacteristics are not so good. In order to control thecharacteristics, by reducing the opening width of the third sub-pixel 2Bin the lateral direction, the viewing angle characteristics of each ofthe first sub-pixel 2R, the second sub-pixel 2G, and the third sub-pixel2B coincide with each other, and thus, the color variation is improved.

If the width L_(BM-H) of the light shielding portion 24 in the lateraldirection is decreased, the viewing angle of the third sub-pixel 2B inthe vertical direction increases (the viewing angle the lateraldirection is not affected). In the pixel structure in the presentembodiment, since the opening width of L_(subpix3-V) is less than thatof L_(subpix1-V) and L_(subpix2-V), it is necessary to increase theviewing angle characteristics of the third sub-pixel 2B by decreasingthe L_(MB-H). If the value of L_(BM-H) is as the value obtained from theFormula (3), the viewing angle characteristics of each sub-pixel in thevertical direction coincide with each other, and thus, the colorvariation is improved. In practical use, it is not necessary for thevalue to perfectly satisfy Formula (3), but may be a value thatsubstantially satisfies Formula (3).L _(BM-H) =L _(subpix3-H) ×L _(subpix3-V) /L _(subpix1-V)L _(BM-H) =L _(subpix3-H) ×L _(subpix3-V) /L _(subpix2-V)  Formula (3)

FIG. 11 illustrates the viewing angle characteristics of the pixel 2 inthe lateral direction in the design example in FIG. 10. FIG. 12illustrates the viewing angle characteristics of the pixel 2 in thevertical direction in the design example in FIG. 10. In FIG. 11 and FIG.12, white color tri-stimulus values of X, Y, and Z are illustrated. Thestimulus value X corresponds to the first color light LR emitted by thefirst sub-pixel 2R. The stimulus value Y corresponds to the second colorlight LG emitted by the second sub-pixel 2G. The stimulus value Zcorresponds to the third color light LB emitted by the third sub-pixel2B.

As in the design example illustrated in FIG. 10, by making the L_(BM-V)be 0.8 μm, the tri-stimulus values X, Y, and Z in the viewing anglecharacteristics coincide with each other as illustrated in FIG. 12, andit can be seen that the color variation of the viewing anglecharacteristics decreases. In addition, in the viewing anglecharacteristics the lateral direction, by making the opening width ofthe third sub-pixel 2B smaller than that of the first sub-pixel 2R andthe second sub-pixel 2G as illustrated in FIG. 11, the tri-stimulusvalues X, Y, and Z coincide with each other, the color variation of theviewing angle characteristics decreases.

Next, the viewing angle characteristics of the pixel 2 in the verticaldirection in a case where the width value L_(BM-H) of the lightshielding portion 24 is changed is illustrated in FIG. 13 and FIG. 14.FIG. 13 illustrates the viewing angle characteristics in a case wherethe width L_(BM-H) of the light shielding portion 24 is large(L_(BM-H)=3.8 μm) in the design example illustrated in FIG. 10, and FIG.14 illustrates the viewing angle characteristics in a case where thewidth L_(BM-H) of the light shielding portion 24 is small (L_(BM-H)=0.8μm) in the design example illustrated in FIG. 10.

In FIG. 13, it can be seen that the viewing angle characteristics of thethird sub-pixel 2B (stimulus value Z) in the vertical direction becomesmall by making the width L_(BM-H) of the light shielding portion 24large. In addition, from FIG. 14, it can be seen that the viewing anglecharacteristics of the third sub-pixel 2B (stimulus value Z) in thevertical direction becomes wide by making the width L_(BM-H) of thelight shielding portion 24 be small. In this way, since the pixel widththat limits the viewing angle is changed by changing the width L_(BM-H)of the light shielding portion 24, it is possible to adjust the viewingangle characteristics. By adjusting the width L_(BM-H) of the lightshielding portion 24 as a design parameter, it can be possible to set anoptimal design value according to the pixel pitch (opening width) or thevalue of the gap D_(G) between the light emitting elements 10R, 10G, and10B, and the color filter 23.

1.3 Effects

As described above, according to the present embodiment, the viewingangle of the third sub-pixel 2B in the first direction (Y direction) islimited by the light shielding portion 24. Therefore, it is possible toachieve both the wide opening and the wide viewing angle.

FIG. 15 illustrates the viewing angle characteristics of the pixel 2 inthe vertical direction in a case where the light shielding portion 24 isnot provided (L_(BM) _(_) _(H) and L_(BM) _(_) _(V)=0) as a comparisonexample with respect to the design example illustrated in FIG. 10. Inthe structure of the comparison example, since there is no lightshielding portion 24, the opening width of the third sub-pixel 2B in thevertical direction increases. For this reason, in the viewing anglecharacteristics in the vertical direction, in an image viewed with anangle with respect to the display surface at the time of white colordisplay, the stimulus value Z of the third sub-pixel 2B relativelyincreases, and the color variation in blue color occurs. On the otherhand, in the array structure of the pixel 2 in the present embodiment,since the light shielding portion 24 is provided in the third sub-pixel2B, the viewing angle characteristics (stimulus value Z) of the thirdsub-pixel 2B can be controlled, and the color variation can bedecreased. In addition, in the viewing angle characteristics in thelateral direction, by making the opening width of the third sub-pixel 2Bof which the wavelength is short in the lateral direction be less thanthat of other sub-pixel, the viewing angle characteristics of each pixelin the lateral direction can coincide with each other, and then, thecolor variation can be improved. In this way, it is possible to achieveboth the wide opening (long life time) and the wide viewing angle whileretaining excellent visibility.

The effects described herein are just examples and are not limitedthereto, and there may be other effects. The same applies to otherembodiments and modification examples described below.

1.4 MODIFICATION EXAMPLES

1.4.1 First Modification Example

FIG. 16 illustrates an example of an array structure of a color filterportion of the pixel 2 in a first modification example. As illustratedin FIG. 16, the planar shape of the light shielding portion 24 may be asubstantially elliptical shape.

1.4.2 Second Modification Example

FIG. 17 illustrates an example of an array structure of a color filterportion of the pixel 2 in a second modification example. As illustratedin FIG. 17, the planar shape of the light shielding portion 24 may be asubstantially circular shape.

The planar shape of the light shielding portion 24 is not limited to therectangular shape, the elliptical shape, or the circular shape, but anyother arbitrary planar shape can be employed.

1.4.3 Third Modification Example

FIG. 18 illustrates an example of an array structure of a color filterportion of the pixel 2 in a third modification example. FIG. 19illustrates an example of a configuration of a color filter portion forone pixel. As illustrated in FIG. 18 and FIG. 19, a width L_(BM-H1) ofthe first light shielding part 24-1 of the light shielding portion 24 inthe lateral direction and a width L_(BM-H2) of the second lightshielding part 24-2 in the lateral direction may be different from eachother.

1.4.4 Fourth Modification Example

FIG. 20 illustrates an example of an array structure of a color filterportion of the pixel 2 in a fourth modification example. As illustratedin FIG. 20, with respect to the sectional structure illustrated in FIG.5, the resin layer 32 may be omitted from the intermediate layer 30.

1.4.5 Fifth Modification Example

FIG. 21 illustrates an example of an array structure of a color filterportion of the pixel 2 in a fifth modification example. As illustratedin FIG. 21, with respect to the sectional structure illustrated in FIG.5, the position on which the light shielding portion 24 is provided in athickness direction (Z direction) may be different. In the sectionalstructure illustrated in FIG. 5, the light shielding portion 24 isprovided on side opposite to the intermediate layer 30. However, asillustrated in FIG. 21, the light shielding portion 24 may be providedon a side near the intermediate layer 30.

2. Second Embodiment (An Example in which the Light Shielding Portion 24is Disposed in a Position Other than a Center Portion in One Pixel)

2.1 Configuration

In the present embodiment, an array structure of the pixel 2,particularly a position on which the light shielding portion 24 isdisposed, is different from that in the display device 1 in the firstembodiment described above.

In the present embodiment, the configuration and the action relating tothe portions other than the array structure of the pixel 2,particularly, the position on which the light shielding portion 24, maybe similar to those in the first embodiment. In addition, theconfiguration may be adopted in which the modification examples in thepresent embodiment and the first embodiment are combined.

FIG. 22 illustrates an example of an array structure of a color filterportion of the pixel 2 in the present embodiment. FIG. 23 illustrates anexample of a configuration of a color filter portion for one pixel inthe present embodiment. FIG. 24 illustrates an example of an arraystructure of a light emitting element of the pixel 2.

In the array structure of the pixel 2 in the present embodiment, thesecond light shielding part 24-2 of the light shielding portion 24 isprovided on a position different from the center portion in the thirdsub-pixel 2B in the first direction. For this reason, in one pixel, thesizes (sizes of the openings) of the first pixel area 2B-1 and thesecond pixel area 2B-2 in the third sub-pixel 2B are different from eachother, with the second light shielding part 24-2 as the boundary. Inthis way, the viewing angle characteristics of the first pixel area 2B-1and the viewing angle characteristics of the second pixel area 2B-2 aredifferent each other. In FIG. 22, L_(subpix3-V1) indicates the openingwidth of the first pixel area 2B-1 in the vertical direction.L_(subpix3-V2) indicates the opening width of the second pixel area 2B-2in the vertical direction.

In the present embodiment, it is preferable that the planar shapes ofthe first light emitting element 10R, the second light emitting element10G, and the third light emitting element 10B be the shapes according tothe position on which the color filter 23 and the light shieldingportion 24 are disposed as illustrated in FIG. 24. It is preferablethat, in one pixel, the third light emitting element 10B be separated atthe portion corresponding to the position on which the second lightshielding part 24-2 is provided. In the second direction, the width ofthe third light emitting element 10B and the width of the lightshielding portion 24 may be different from each other. The first lightemitting element 10R, the second light emitting element 10G, and thethird light emitting element 10B may respectively include the lightemitting layer 16C (light emitting surface) and the lower electrode 14(reflection surface).

2.2 Acts and Effects

FIG. 25 illustrates viewing angle characteristics of the third sub-pixel2B in the vertical direction in the present embodiment. In the leftdiagram of FIG. 25, the viewing angle characteristics of each of thefirst pixel area 2B-1 and the second pixel area 2B-2 in the thirdsub-pixel 2B are independently illustrated. In the left diagram of FIG.25, the viewing angle characteristics of the entire third sub-pixel 2Bare illustrated.

The viewing angle characteristics can be adjusted by shifting theposition of the light shielding portion 24 from the center portion ofone pixel and changing the opening width of the third sub-pixel 2B inthe vertical direction in one pixel. Since the viewing anglecharacteristics of the entire third sub-pixel 2B is the sum of theviewing angle characteristics of the vertically wide pixel (the secondpixel area 2B-2) and the viewing angle characteristics of the narrowpixel (the first pixel area 2B-1), an inflection point can be providedon the entire viewing angle characteristics as illustrated in the rightdiagram in FIG. 25, and it is possible to finely adjust the viewingangle characteristics.

3. Third Embodiment (An Example of a 4-Color Type Display Device 1A)

FIG. 26 is a diagram illustrating an example of a planar configurationof the display device 1A in the present embodiment. The display device1A in the present embodiment has a configuration in which a plurality ofpixels 2A having a 4-color sub-pixel in which a fourth sub-pixels 2W isadded to the first sub-pixel 2R, the second sub-pixel 2G, and the thirdsub-pixel 2B, is disposed in matrix shape in the first direction and thesecond direction.

In the present embodiment, the configuration other than the portionsrelating to the array structure, the action, and the effects of thepixel 2A may be similar to those in the first embodiment.

In the display device 1A in the present embodiment, the fourth sub-pixel2W is disposed to be adjacent to the first sub-pixel 2R in the seconddirection (X direction). The third sub-pixel 2B is disposed to beadjacent to the second sub-pixel 2G in the second direction (Xdirection) and adjacent to the fourth sub-pixel 2W in the firstdirection (Y direction).

Not being limited to the illustrated example of disposing thesub-pixels, for example, the fourth sub-pixel 2W and the third sub-pixel2B may be disposed in reverse. That is, the third sub-pixel 2B may bedisposed to be adjacent to the first sub-pixel 2R in the seconddirection (X direction), and the fourth sub-pixel 2W may be disposed tobe adjacent to the second sub-pixel 2G in the second direction (Xdirection).

Hereinafter, a first example and a second example of the array structureof the pixel 2A will be described with reference to FIG. 27 to FIG. 29and FIG. 30 to FIG. 32. Each pixel 2A includes the light emittingelement that emits a color light and the color filter 23A that transmitsa color light. The fourth sub-pixel 2W includes a fourth light emittingelement that emits a fourth a color light and a fourth color filter 23Wthat transmits the fourth color light from the fourth light emittingelement. The fourth light emitting element of the fourth sub-pixel 2W isan element that emits, for example, a white color light.

3.1 First Example of an Array Structure of the Pixel 2A

FIG. 27 illustrates the first example of the array structure of thecolor filter portion of the pixel 2A. FIG. 28 illustrates an example ofa configuration of the color filter portion for one pixel in the firstexample illustrated in FIG. 27. FIG. 29 illustrates an example of anarray structure of only the color filter 23A in which the lightshielding portion 24A is omitted in the first example illustrated inFIG. 27.

The light shielding portion 24A is disposed around the fourth sub-pixel2W so as to include the boundary portion of the first sub-pixel 2R andthe third sub-pixel 2B. The light shielding portion 24A limits theviewing angle of the third sub-pixel 2B in the first direction andlimits the viewing angle of the fourth sub-pixel 2W in the firstdirection and the second direction.

The light shielding portion 24A is formed of the first light shieldingpart 24-1, the second light shielding part 24-2, the third lightshielding part 24-3, and the fourth light shielding part 24-4. The firstlight shielding part 24-1 is provided on the boundary portion of thepixels adjacent to each other in the first direction. The second lightshielding part 24-2 is provided on the boundary portion of the thirdsub-pixel 2B and the fourth sub-pixel 2W in one pixel. The third lightshielding part 24-3 is provided on the boundary portion of the pixelsadjacent to each other in the second direction. The fourth lightshielding part 24-4 is provided on the boundary portion of the firstsub-pixel 2R and the fourth sub-pixel 2W in one pixel.

In FIG. 27, L_(subpix4-H) indicates the opening width of the fourthsub-pixel 2W in the lateral direction and L_(subpix4-V) indicates theopening width of the fourth sub-pixel 2W in the vertical direction.

As illustrated in FIG. 29, the first color filter 23R and the secondcolor filter 23G have substantially the same sizes. In addition, thethird sub-pixel 2B and the fourth color filter 23W have substantiallythe same sizes. It is preferable that the width of the third colorfilter 23B and the fourth color filter 23W in the lateral direction beless than the width of the first color filter 23R and the second colorfilter 23G in the lateral direction.

3.2 Second Example of an Array Structure of the Pixel 2A

FIG. 30 illustrates a second example of an array structure of a colorfilter portion of the pixel 2A. FIG. 31 illustrates an example of aconfiguration of the color filter portion for one pixel in the secondexample illustrated in FIG. 30. FIG. 32 illustrates an example of anarray structure of only the color filter 23A in which the lightshielding portion 24A is omitted in the second example illustrated inFIG. 30.

In the second example also, similarly to the first example describedabove, the light shielding portion 24A is disposed around the fourthsub-pixel 2W so as to include the boundary portion of the firstsub-pixel 2R and the third sub-pixel 2B. The light shielding portion24A, similarly to the first example, is formed of the first lightshielding part 24-1, the second light shielding part 24-2, the thirdlight shielding part 24-3, and the fourth light shielding part 24-4.

In FIG. 30, L_(subpix4-H) indicates the opening width of the fourthsub-pixel 2W in the lateral direction and L_(subpix4-V) indicates theopening width of the fourth sub-pixel 2W in the vertical direction.

In the second example, as illustrated in FIG. 32, the sizes of the firstcolor filter 23R, the second color filter 23G, the third color filter23B, and the fourth color filter 23W are different each other. It ispreferable that the width of the third color filter 23B and the fourthcolor filter 23W in the lateral direction be less than the width of thefirst color filter 23R and the second color filter 23G in the lateraldirection.

4. Application Example of a Display Device to an Electric Apparatus

The display device 1 and 1A in each embodiment described above can bemounted on electric apparatuses in various fields that perform thedisplaying of an image (or video).

4.1 First Application Example

FIG. 33 is a diagram illustrating an external view of a head mountdisplay on which the display device 1 or 1A is applied. The head mountdisplay, for example, has an ear hook portion 72 for mounting on theuser's head on both sides of a glass-shaped display portion 71, and thedisplay portion 71 is configured from the display device 1 or 1A in eachembodiment described above. By applying the display device 1 or 1Aaccording to the present disclosure to the display portion 71 of thehead mount display, both the wide opening and the wide viewing angle canbe achieved, and thus, it is possible to contribute to themerchantability improvement of the head mount display.

4.2 Second Application Example

FIG. 34 and FIG. 35 are diagrams illustrating the external view of animaging apparatus (a lens-exchange style and single lens reflex typedigital camera) to which the display device 1 or 1A is applied. Theimaging apparatus, as illustrated in FIG. 34, has an exchangeableimaging lens unit (exchangeable lens) 212 on the front right side of acamera main body portion (camera body) 211, and has a grip portion 213on the front left side of the camera body for the user to grip. Asillustrated in FIG. 35, a monitor 214 is provided on the substantiallycenter of the rear surface of the camera main body portion 211. Asillustrated in FIG. 35, a view finder (an eyepiece window) 215 isprovided on the upper portion of the monitor 214. A photographer candetermine a frame by visually recognizing an optical image of a subjectinduced from the imaging lens unit 212 by looking into the view finder215. The view finder 215 is configured from the display device 1 or 1Ain each embodiment described above. By applying the display device 1 or1A according to the present disclosure to the view finder of the imagingapparatus, both the wide opening and the wide viewing angle can beachieved, and thus, it is possible to contribute to the merchantabilityimprovement of the head mount display.

The technology according to the present disclosure makes largecontributions to particularly the electronic apparatus in theabove-described application example. However, the technology accordingto the present disclosure can be applied to various electricapparatuses, not limited to the above-described application examples.

5. Other Embodiments

The technology according to the present disclosure is not limited to thedescriptions in each of embodiments, and various modifications can bemade.

For example, in each of the embodiments described above, the arraystructure of the pixels is described with the first direction as thevertical direction (Y direction) in the display plane, and the seconddirection as the lateral direction (X direction) in the display plane.However, the array structure of the pixels may be with the firstdirection as the lateral direction (X direction) and the seconddirection as the vertical direction (Y direction).

For example, the array structure of the pixel 2 of the display device 1in the first embodiment illustrated in FIG. 1 and FIG. 2 may have thearray structure of the display device 1B illustrated in FIG. 36 and FIG.37. That is, as in the display device 1B illustrated in FIG. 36 and FIG.37, the array structure may be a structure in which the first sub-pixel2R and the second sub-pixel 2G are disposed to be adjacent to each otherin the lateral direction (X direction), and the third sub-pixel 2B isdisposed to be adjacent to both the first sub-pixel 2R and the secondsub-pixel 2G in the vertical direction (Y direction).

In addition, the present technology can have a configuration as follows.

-   (1) A display device including: a plurality of pixels that is    arrayed in a first direction and a second direction, in which each    pixel includes: a first sub-pixel, a second sub-pixel that is    disposed to be adjacent to the first sub-pixel in the first    direction, a third sub-pixel that is disposed to be adjacent to at    least one of the first sub-pixel and the second sub-pixel in the    second direction, and a light shielding portion that is disposed    corresponding to the position on which the third sub-pixel is    disposed, so as to limit a viewing angle of the third sub-pixel in    the first direction.-   (2) The display device according to above (1), in which the third    sub-pixel is disposed to be adjacent to both the first sub-pixel and    the second sub-pixel in the second direction, and the light    shielding portion includes a first portion that is provided on a    boundary portion of the adjacent pixels in the first direction and a    second portion that is provided within the third sub-pixel in one    pixel.-   (3) The display device according above (2), in which a width of the    light shielding portion in the second direction is less than an    opening width of the third sub-pixel.-   (4) The display device according to above (2) or (3), in which the    first sub-pixel includes a first color filter that transmits a first    color light, the second sub-pixel includes a second color filter    that transmits a second color light, the third sub-pixel includes a    third color filter that transmits a third color light, a color    separation is mutually performed on the first sub-pixel and the    second sub-pixel in the first direction and performed on the third    sub-pixel in the second direction by the first color filter and the    second color filter, and a color separation is performed on the    first sub-pixel and the second sub-pixel in the second direction by    the third color filter.-   (5) The display device according any one of above (2) to (4), in    which the sizes of the first portion and the second portion are    different from each other.-   (6) The display device according to any one of above (2) to (5), in    which the second portion is provided on a center portion in the    third sub-pixel in the first direction.-   (7) The display device according any one of above (2) to (5), in    which the second portion is provided on a position different from    the center portion in the third sub-pixel in the first direction.-   (8) The display device according to above (7), in which, in one    pixel, a first pixel area and a second pixel area are formed in the    third sub-pixel with the second portion as a boundary, and viewing    angle characteristics of the first pixel area and viewing angle    characteristics of the second pixel area are different from each    other.-   (9) The display device according any one of above (2) to (8), in    which the light shielding portion has a rectangular shape, an    elliptical shape, or a circular shape.-   (10) The display device according any one of above (2) to (9), in    which the first sub-pixel includes a first light emitting element    that emits the first color light, the second sub-pixel includes a    second light emitting element that emits the second color light, the    third sub-pixel includes a third light emitting element that emits    the third color light, and, in one pixel, the third light emitting    element is divided at the portion corresponding to the position on    which the second portion is provided.-   (11) The display device according to above (10), in which, in the    second direction, a width of the third light emitting element and a    width of the light shielding portion are different from each other.-   (12) The display device according any one of above (1) to (11), in    which the first color light is emitted from the first sub-pixel, the    second color light is emitted from the second sub-pixel, the third    color light of which a wavelength is shorter than that of the first    color light and the second color light is emitted from the third    sub-pixel, and, in the second direction, an opening width of the    third sub-pixel is less than an opening width of the first sub-pixel    and an opening width of the second sub-pixel.-   (13) The display device according to above (1), in which each pixel    further includes a fourth sub-pixel that is disposed to be adjacent    to the first sub-pixel in the second direction, the third sub-pixel    is disposed to be adjacent to the second sub-pixel in the second    direction and is disposed to be adjacent to the fourth sub-pixel in    the first direction, and the light shielding portion is disposed    around the fourth color filter so as to include a boundary portion    of the first sub-pixel and the third sub-pixel.-   (14) The display device according to above (13), in which the light    shielding portion limits the viewing angle of the third sub-pixel in    the first direction and limits the viewing angle of the fourth    sub-pixel in the first direction and the second direction.-   (15) An electronic apparatus including: a display device in which a    plurality of pixels is arrayed in a first direction and a second    direction, in which each pixel includes; a first sub-pixel, a second    sub-pixel that is disposed to be adjacent to the first sub-pixel in    the first direction, a third sub-pixel that is disposed to be    adjacent to at least one of the first sub-pixel and the second    sub-pixel in the second direction, and a light shielding portion    that is disposed corresponding to the position on which the third    sub-pixel is disposed, so as to limit a viewing angle of the third    sub-pixel in the first direction.

It should be understood by those skilled in the art that variousmodifications, combinations, sub-combinations and alterations may occurdepending on design requirements and other factors insofar as they arewithin the scope of the appended claims or the equivalents thereof.

What is claimed is:
 1. A display device comprising: a plurality ofpixels that is arrayed in a first direction and a second direction,wherein each pixel includes; a first sub-pixel, a second sub-pixel thatis disposed to be adjacent to the first sub-pixel in the firstdirection, a third sub-pixel that is disposed to be adjacent to at leastone of the first sub-pixel and the second sub-pixel in the seconddirection, and a light shielding portion that is disposed correspondingto the position on which the third sub-pixel is disposed and including afirst part that is disposed on a boundary between adjacent pixels in thefirst direction and a second part that is disposed within the thirdsub-pixel in one pixel, so as to limit a viewing angle of the thirdsub-pixel in the first direction, and wherein the light shieldingportion is not disposed between the first sub-pixel and the secondsub-pixel.
 2. The display device according claim 1, wherein the thirdsub-pixel is disposed to be adjacent to both the first sub-pixel and thesecond sub-pixel in the second direction.
 3. The display deviceaccording claim 2, wherein a width of the light shielding portion in thesecond direction is less than an opening width of the third sub-pixel.4. The display device according claim 2, wherein the first sub-pixelincludes a first color filter that transmits a first color light,wherein the second sub-pixel includes a second color filter thattransmits a second color light, wherein the third sub-pixel includes athird color filter that transmits a third color light, wherein a colorseparation is mutually performed on the first sub-pixel and the secondsub-pixel in the first direction and performed on the third sub-pixel inthe second direction by the first color filter and the second colorfilter, and wherein a color separation is performed on the firstsub-pixel and the second sub-pixel in the second direction by the thirdcolor filter.
 5. The display device according claim 2, wherein the sizesof the first part and the second part are different from each other. 6.The display device according claim 2, wherein the second part isprovided on a center portion in the third sub-pixel in the firstdirection.
 7. The display device according claim 2, wherein the secondpart is provided on a position different from the center portion in thethird sub-pixel in the first direction.
 8. The display device accordingclaim 7, wherein, in one pixel, a first pixel area and a second pixelarea are formed in the third sub-pixel with the second part as aboundary, and wherein viewing angle characteristics of the first pixelarea and viewing angle characteristics of the second pixel area aredifferent from each other.
 9. The display device according claim 2,wherein the light shielding portion has a rectangular shape, anelliptical shape, or a circular shape.
 10. The display device accordingclaim 2, wherein the first sub-pixel includes a first light emittingelement that emits the first color light, wherein the second sub-pixelincludes a second light emitting element that emits the second colorlight, wherein the third sub-pixel includes two third light emittingelements that each emit the third color light, and wherein, in onepixel, the two third light emitting elements are separated by a gaplocated at a position corresponding to a position on which the secondpart is provided.
 11. The display device according claim 10, wherein, inthe second direction, a width of a respective third light emittingelement and a width of the light shielding portion are different fromeach other.
 12. The display device according claim 1, wherein the firstcolor light is emitted from the first sub-pixel, wherein the secondcolor light is emitted from the second sub-pixel, wherein the thirdcolor light of which a wavelength is shorter than that of the firstcolor light and the second color light is emitted from the thirdsub-pixel, and wherein, in the second direction, an opening width of thethird sub-pixel is less than an opening width of the first sub-pixel andan opening width of the second sub-pixel.
 13. The display deviceaccording claim 1, wherein each pixel further includes a fourthsub-pixel that is disposed to be adjacent to the first sub-pixel in thesecond direction, wherein the third sub-pixel is disposed to be adjacentto the second sub-pixel in the second direction and is disposed to beadjacent to the fourth sub-pixel in the first direction, and wherein thelight shielding portion is disposed around the fourth color filter so asto include a boundary portion of the first sub-pixel and the thirdsub-pixel.
 14. The display device according claim 13, wherein the lightshielding portion limits the viewing angle of the third sub-pixel in thefirst direction and limits the viewing angle of the fourth sub-pixel inthe first direction and the second direction.
 15. The display deviceaccording to claim 1, wherein the first portion part is discontinuouswith the second -portion part.
 16. The display device according to claim1, wherein the light shielding portion is contained within the thirdsub-pixel.
 17. An electronic apparatus comprising: a display device inwhich a plurality of pixels is arrayed in a first direction and a seconddirection, wherein each pixel includes; a first sub-pixel, a secondsub-pixel that is disposed to be adjacent to the first sub-pixel in thefirst direction, a third sub-pixel that is disposed to be adjacent to atleast one of the first sub-pixel and the second sub-pixel in the seconddirection, and a light shielding portion that is disposed correspondingto the position on which the third sub-pixel is disposed and including afirst part that is disposed on a boundary between adjacent pixels in thefirst direction and a second part that is disposed within the thirdsub-pixel in one pixel, so as to limit a viewing angle of the thirdsub-pixel in the first direction, and wherein the light shieldingportion is not disposed between the first sub-pixel and the secondsub-pixel.